THE MARINE ALfl.E OF ESSEX. 5 



Trindelen," etc., p. 17, tab. vii., fig. 4. On the muddy banks of the 

 Stour, near Harwich; June, 1S85, E. A. B. 



OSCILLx\TORIA, Vaucher. 

 Oscillatoria corallinae, Gom., in Morot, "Journ. Bot," iv., 

 p. 356. On the muddy banks of the Stour, near Harwich ; June, 

 1885, E. A. B. 



LYNGBYA, C, Ag. 



Lyngbya semi-plena, J. Ag , "Alg. Mar. Med.," p. 11. On 

 rocks and posts near high-water mark. Southend, July, 1890, Mrs. 

 Buffham. 



L. aestuarii, Liebman, "Bemerkninger og Tillag til den 

 danske Algeflora," Kroger's "Tidskrift," 1841, p. 492. On the 

 muddy banks of the Stour and Orwell; June, 1885, E. A. B. Not 

 uncommon. 



SYMPLOCA, Kutz. 



Symploca hydnoides, Kiitz., "Spec. Algar.," p. 272. Rocks at 

 and above high-water mark. Felixstowe, June, 1885, E. A. B. This 

 species is also found on the muddy banks of the Stour and Orwell. 



Vaginarieae, Gomont. 



MICROCOLEUS, Desmaz. 



Microcoleus chthonoplastes, Thur., "Ess. de Classif. des 



Nostoc. Ann. des Sc. nat., 6 ser., Bot.," i., p. 378. On the muddy 



banks of the Stour, and in the shallow pools of the salt marsh 



between Felixstowe Railway-station and the River. 



HE TEROC YSTE. E, Hansg. 



Rivulariaceae, Rabenh. 



CALOTHRIX, Ag. 



Calothrix scopulorum, Ag., "Syst. Alg.," p. 70. On posts 



near high-water mark. Clacton, Jan., 1893, E. A. B. This species 



is usually found growing in company with species of Enteromorphcc, 



Chcetomorplue, and other small alg«. 



C. pulvinata, Ag., "Syst. Alg.," p. 71. "On stakes near the 

 shore, Osey Island," E. M. Holmes, Essex Naturalist, vol. ii., 

 p. 249. 



C. confervicola, Ag., "Syst. Alg.," p. 7°- Epiphytic on 

 various small algae, specially Cera?nium rubrum. Although this 

 species has not been recorded from the county of Essex, it is almost 



